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OpenStudy (anonymous):
(12-sqrt-4)+(7+sqrt-9)
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OpenStudy (anonymous):
\[(12-\sqrt{-4})+(7+\sqrt{-9})\]
geerky42 (geerky42):
Remember, \( \sqrt{-a} = i\sqrt a\)
geerky42 (geerky42):
Do that then combine like terms.
geerky42 (geerky42):
Don't forgot to simply.
OpenStudy (anonymous):
\[2\sqrt{3}-2i+7+3i\]
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OpenStudy (anonymous):
oh its 12+7=19
OpenStudy (anonymous):
19+i
geerky42 (geerky42):
Yep.
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